Rivet-setting machine



No. 619,247. PatentedvFeb. 7,1899. E. A. BARBER.

RIVET SETTING MACHINE.

` (Application led Jan. 29, 1898.) (No Model.) 2-Sheeis-Shoet. I`

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RIVET SETTING MACHINE. (Appucaeiun med n. sa, leas.)

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in: nnm; suns ce, nam-mno. wAsnmmoN n UNITED STATES PATENT OFFICE.

EVERETT` A. BARBER, OF ATLANTIC, MASSACHUSETTS, ASSIGNOR TO THE STANDARD RIVET COMPANY, OF CONCORD, NEW' HAMPSHIRE.

RIVET-SETTINGIVIACHINE.

SPECIFICATION vforming part of Letters Patent No. 619,247, dated February 7, 1899.

Application tiled January Z9, 1898. Serial No. 668,416. (No modal.)

To all whom t may concern: exhibited is intended to set. Fig. 2 is a de- Be it known that I, EVERETT A. BARBER, of tail showing parts of said machine which are Atlantic, county of Norfolk, State oflWIassanot represented in Fig. l. Fig. 3 is a top or chusetts, have invented an Improvement in plan view of the hopper and the raceway- 55 5 Rivet-Setting Machines, of which the followplate with its circular upper end forming a ing description, in connection with the accompart of the bottom of the hopper, together panying drawings, is a specification, like letwith the pawl and part of its actuating de ters on the drawings representing like parts. vices for imparting movement to the said hop- This invention has for its object to improve per. Fig. 4 is a side elevation of the said hop- 6o 1o rivet-setting machines, my invention relating per and parts shown in Fig. 3 in the position more especially to the means controlling the they will normally stand when in operation, feed of the rivets at the raceway. said ligure also showing part ofthe actuating Prior to my invention rotary hoppers condevices employed for imparting` motion to taining rivets have been rotated by pawls thepawl. Fig. tlshowe the pawlddetached, 65 15 engaging ratchet-teeth, and said pawls have and Fig. 5 is a cross-section in the line Fig. 3.

clicked back over the ratchet-teeth when com- The column A in practice rests upon a suiting again into their operative positions, thus able base at the floor, said base being provided unnecessarily wearing the said teeth and with a suitable treadle (not shown) and the pawls, and, further, the action of the pawl head A mounted on said column,the raceway 7o zo mechanism has been such as to retard the B having a circular plate B', provided with a movement of the hopper after the pawl shall groove B2, in which are deposited the rivets have come to the end of its stroke, whereas for or other pronged instruments to be delivered the best results the said hopper should confrom the end of the raceway in position to be tinue to rotate due to the momentum given to acted upon by a set, the top set C, adapted to 75 2 5 itby the action of the pawl. I have improved descend in the opening C at the end of the a rivet-setting machine sc that the motion imraceway, said opening enabling the set to meet parted to the hopper by the pawl may be consaid rivet and drive it through the nose C2, tinued, due to the momentum of said hopper, causing the prongs of the rivet to strike the after the pawl has come to rest, and the pawl anvil C3 and to be clenched thereon, said an- 8o 3o when it arrives at the end of its thrust is imvil being carried by a suitable horn C4, the mediately detached or disengaged from the lever C5, connected with and operating the ratchet-teeth of the hopper, and as it is moved set C, and the connecting-rod C, in practice back into its normal or starting position the extended down to and attached to the usual said pawl travels over a guard which pretreadle referred to, are and may be all sub- 85 3 5 vents it from engaging at all the said ratchetstantially as old and common in this class of teeth. I have arranged to actuate the pawl machines, with the exception that herein one referred to from and by the movement of the wall of the groove B2 of the bottom plate is lever operating the usual set, thus greatly provided witha righting-space @,the mouth simplifying the necessary operating devices, of said groove being made by removing or cut- 9o 4o and I have also provided the stationary botting away a part of the side wall a of the tom of the hopper with arighting-space comgroove B2, so that any rivet or fastening municating with the rivet-receiving groove wrongly placed in said groove and on its way of the raceway, whereby any rivets wrongly down into the raceway under the usual cover placed may be discharged from said groove B3 thereof may be struck by one of the agi- 95 45 before passing under the usual cover-plate tators b, to he described, and be wiped readily of the raceway. into the mouth of said space CL and up its in- Figurelin side elevation representsasufliclined bottom onto the top of the circular cient portion of a rivet-setting machine with plate B. This righting-space obviates the my improvements added to enable my invenclogging of the machine and causes the rivets roo 5o tion to be understood. Fig. l shows one to descend properly and uniformly down the form of fastening which the machine herein raceway, so that there may always be a rivet at the end of the raceway under the descending set.-

The bottom plate B has an extended arm B4 langed at B5 and having suitable holes to receive suitable bolts or screws by which to attach the said arm to the head A of the machine to thereby su pport the plate B and raceway in proper operating position. This plate B receives in it a stud b', having a iiange b2, on which, in this instance of my invention, rests a grooved Washer b3, provided with a series of antifriction-rolls b4, on which rests a second washer b5, interposed between said rolls and the end of the hub 196 of the revolving spider 197, carrying the agitators b, and having secured to it by screws bs the. hopper b9, provided with ratchet-teeth 1910, said antifrictionrolls b4 serving to sustain the weight of the spider and the hopper. The washers b3 and b5 might, it is obvious, be dispensed with, and the flange b2 might be grooved and the hub 196 of the spider blrest directly on the said antifriction-rolls; but such construction would not be as durable and as cheap as the em ployment of the two washers b3 and b5, and preferably the said washers will both occupy a iXed position.

The agitators b are herein shown as composed of wire bent into spiral or spring form and preferably present-ing two diameters. These wire agitators have been found in practice to be quite durable.

The stud b has applied to its outer end a collar d', and said stud above said collar constitutes the fulcrum for the pawl-carrier d2, said pawl-carrier in this present embodiment of my invention being represented as a sort of elbow-lever having a long slot d3 in one of its arms and having at its opposite arm a stud d", upon which is mounted the pawl d5, said pawl being controlled by a suitable spring d6, which normally keeps the said pawl pressed toward and so as to engage the teeth of the ratchet-wheel when not prevented from so doing, as will be hereinafter described.- This pawl-carrier derives its movement, as herein shown, from a lever e, free to turn on astudscrew e, su pported in an ear of the said arm B4, one end of said lever having a roller-stud e2, which enters the slot d3 of the said lever d2, While the opposite end of the lever has a slot e4, which is entered by a finger or projection e5, connected by a suitable set-screw e6 with an arm e7, attached to and moving with the said operating-lever C5, so that whenever the operator puts his foot upon the treadle to move the lever C5 to depress the set the said lever e is moved to actuate the pawl and cause it to move in the direction of the arrow near it in Fig. 3 to engage the teeth blo of the hopper and start the same rapidly in rotation, so that the agitators carried by the spider 57 thereof will strike and agitate the rivets in the hopper, thereby keeping a part of the groove B2 properly filled to supply correctly the raceway.

The pawl d5 referred to, it being shown separately in Fig. 4, has a depending lug (15X,

which when thepawl is moving in the direction stated in its actuating stroke passes behind the shield f, attached to a suitable upright or lug f', rising from the arm B4, by suitable screws f2, and said pawl is kept in engagement with said teeth toward the latter vend of its stroke by means of a spring g, connected with said shield by suitable screws g'; but just before said pawl arrives at the end of-its stroke the lug dsx, extended therefrom, meets a projection g2, (see Figs. 3 to 5,) the shape of said projection being best shown in Fig. 5, it being held in operative position by suitable screws h3, inserted in the bottom of the plate B', the action of said lug against said projection effectually disengaging the teeth of the pawl from the teeth of the ratchet, so that the hopper which was started by a quick thrust of the pawl and given very considerable momentum may continue to turn by momentum after the said pawl has been disengaged from the said teeth. The teeth of the pawl having been disengaged from the teeth of the hopper and the movement of the pawl in the opposite direction having started, the said lug immediately rides onto the outer face of the spring g and travels backward over said spring and shield f until it arrives at the shoulder-f5 of said shield, when it drops into a notch, and the free end of said pawl thereafter rests on a pawl-support h, it not meeting the teeth again until after the movement of the pawl-carrier is again started to actuate the hopper. In this way all the movement imparted to the hopper by the pawl, however actuated, is retained and expended in momentum.

The spider has, in this instance of my invention, a short arm b1, which receives in it an agitator Z913, the upper end of which is shown only in Fig. 3, said agitator being the same as the agitators b, fully shown in Fig. 5. This agitator 513 sweeps the groove B2 close to the stud b' and prevents the accumulation of rivets at the stud, which would close the groove, so that rivets put into the upper part of the groove might not have ready access and free chance to descend into the said groove toward the raceway and its cover-plate.

I have herein referred to rivets as being set by the machine herein described; but it will be understood that this apparatus is adapted to set any usual pronged or other fastenings, such as used in connection with boots or shoes, and the term rivet used in the claims is therefore employed in its broad sense to represent any usual pronged or legged device which is to be controlled by a raceway and automatically set by a top set or driver.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a rivet-setting machine, a raceway having a connected circular plate B provided with a rivet-receiving groove, one side of said groove being notched or cut away to constitute a righting-space a, having an inclined bottom;

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combined with a circular Wall arranged at one side of said plate, and an agitator, and actuating means therefor to cause said agitator to sweep the rivets within said Wall about on said plate, said agitator removing from the said groove through said righting-space any rivet wrongly placed at the point where it should pass freely under the coverplate of the raceway, substantially as described.

2. In a machine for setting rivets, a bottom plate provided with a groove in communication with a raceway, and a stud carried by said bottom plate, combined with a spider carrying agitators and a hopper, attached to and moving with said agitator, and antifriction-rolls to sustain the Weight of said spider and hopper, substantially as described.

3. In a bottom plate, a rotatable hopper provided with ratchet-teeth and connected agitators, combined with a pawl, means to actuate said pawl to first engage said ratchetteeth and then start in rotation said hopper, and means to effect the disengagement of said pawl from said ratchet-teeth substantially as the said pawl completes its stroke whereby said hopper is permitted to rotate freely due to the momentum given to it by the action of said pawl, substantially as described.

4. The hopper provided with a series of ratchet-teeth, a series of agitators connected therewith, a spring-pressed pawl, means to actuate it, a rest for said vpawl in its retracted position, means to detach said pawl quickly from'said ratchet-teeth, and a shield to prevent the contact of said pawl with said ratchet teeth While the pawl is on its back stroke, substantially as described.

5. In a machine of the class described, a rotating hopper having a series of ratchetteeth, a connected spider having agitators, a bottom plate supporting the rivets to be set, a pawl-carrier to sustain said pawl, a lever engaging said pawl-carrier, a set, a lever for actuating it, and connections between the lever for actuating the set and the lever for actuating the pawl-carrier, means to disengage the pawl from the ratchet-teeth of the hopper at the end of its actuating stroke, and a shield to prevent the contact of said pawl with said ratchet-teeth while returning into its inoperative position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence ofl two subscribing witnesses.

EVERETT A. BARBER.

Witnesses:

GEO. W. GREGORY, MARGARET A. DUNN. 

